On our recent trip to Europe, we missed a connection in Frankfurt (don't ever do that!). I was able to tell that one of our bags made the transition to the new flight while one remained in Germany. This was super helpful in dealing with the airline and the airport. I was able to show them exactly where my bag was. Since I got the "Buy 2 Get 1 Free" deal I decided to keep one in my purse and use the other two for the suitcases. This helped a lot by being able to show where the luggage was an...